scholarly journals The Shelf Circulation of the Bellingshausen Sea Third Revision

2021 ◽  
Author(s):  
L. M. Schulze Chretien ◽  
A. F. Thompson ◽  
M. M. Flexas ◽  
K. Speer ◽  
N. Swaim ◽  
...  
Keyword(s):  
Shelf Circulation ◽  
Bellingshausen Sea

Southern Ocean JGOFS: The U.K. “STERNA” study in the Bellingshausen Sea

1995 ◽  
Vol 42 (4-5) ◽  
pp. 905-906 ◽  
Author(s):  
David Turner ◽  
Nicholas Owens ◽  
Julian Priddle
Keyword(s):  
Southern Ocean ◽  
Bellingshausen Sea

scholarly journals Variability and Long‐Term Trends in the Shelf Circulation Off Eastern Tasmania

2018 ◽  
Vol 123 (10) ◽  
pp. 7366-7381 ◽  
Author(s):  
Eric C. J. Oliver ◽  
Neil J. Holbrook
Keyword(s):  
Shelf Circulation ◽  
Long Term Trends

scholarly journals Shelf Circulation Induced by an Orographic Wind Jet

2017 ◽  
Vol 122 (10) ◽  
pp. 8225-8245 ◽  
Author(s):  
Laura Ràfols ◽  
Manel Grifoll ◽  
Gabriel Jordà ◽  
Manuel Espino ◽  
Abdel Sairouní ◽  
...  
Keyword(s):  
Shelf Circulation

scholarly journals Modulation of Near-Inertial Oscillations by Low-Frequency Current Variations on the Inner Scotian Shelf

2019 ◽  
Vol 49 (2) ◽  
pp. 329-352 ◽  
Author(s):  
Pengcheng Wang ◽  
Zhongjie He ◽  
Keith R. Thompson ◽  
Jinyu Sheng
Keyword(s):  
High Frequency ◽  
Spatial Scales ◽  
Slab Model ◽  
Boundary Current ◽  
Scotian Shelf ◽  
Inertial Oscillations ◽  
Study Region ◽  
Shelf Circulation ◽  
High Frequency Radar ◽  
Adcp Observations

AbstractNear-inertial oscillations (NIOs) on the inner Scotian shelf are studied using observations, a simple slab model, and two operational shelf circulation models. High-frequency radar and ADCP observations from December 2015 to February 2016 show that individual NIO events forced by time-varying wind stress typically lasted for three to four inertial periods. NIOs with speeds exceeding 0.25 m s−1 were observed in the offshore part of the study region, but their amplitudes decreased shoreward within ~40 km of the coast. The NIOs had spatial scales of ~80 and ~40 km in the alongshore and cross-shore directions, respectively. The NIO phases varied moving from west to east, consistent with the typical movement of winter storms across the study region. Evolving rotary spectral analysis reveals that the peak frequency fp of the NIOs varied with time by ~7% of the local inertial frequency. The variation in fp can be explained in part by local wind forcing as demonstrated by the slab model. The remaining variation in fp can be explained in part by variations in the background vorticity associated with changes in the strength and position of the Nova Scotia Current, an unstable baroclinic boundary current that runs along the coast to the southwest. Two operational shelf circulation models are used to examine the abovementioned features in the high-frequency-radar and ADCP observations. The models reproduce the spatial structure of the NIOs and, in a qualitative sense, the temporal variations of fp.

scholarly journals The importance of wind-blown snow redistribution to snow accumulation on Bellingshausen Sea ice

2011 ◽  
Vol 52 (57) ◽  
pp. 271-278 ◽  
Author(s):  
Katherine C. Leonard ◽  
Ted Maksym
Keyword(s):  
Sea Ice ◽  
Mass Balance ◽  
Snow Accumulation ◽  
Blowing Snow ◽  
Wind Speeds ◽  
Antarctic Sea Ice ◽  
Drifting Snow ◽  
Bellingshausen Sea ◽  
Ice Mass Balance ◽  
High Winds

AbstractSnow distribution is a dominating factor in sea-ice mass balance in the Bellingshausen Sea, Antarctica, through its roles in insulating the ice and contributing to snow-ice production. the wind has long been qualitatively recognized to influence the distribution of snow accumulation on sea ice, but the relative importance of drifting and blowing snow has not been quantified over Antarctic sea ice prior to this study. the presence and magnitude of drifting snow were monitored continuously along with wind speeds at two sites on an ice floe in the Bellingshausen Sea during the October 2007 Sea Ice Mass Balance in the Antarctic (SIMBA) experiment. Contemporaneous precipitation measurements collected on board the RVIB Nathaniel B. Palmer and accumulation measurements by automated ice mass-balance buoys (IMBs) allow us to document the proportion of snowfall that accumulated on level ice surfaces in the presence of high winds and blowing-snow conditions. Accumulation on the sea ice during the experiment averaged <0.01 m w.e. at both IMB sites, during a period when European Centre for Medium-Range Weather Forecasts analyses predicted >0.03 m w.e. of precipitation on the ice floe. Accumulation changes on the ice floe were clearly associated with drifting snow and high winds. Drifting-snow transport during the SIMBA experiment was supply-limited. Using these results to inform a preliminary study using a blowing-snow model, we show that over the entire Southern Ocean approximately half of the precipitation over sea ice could be lost to leads.

scholarly journals Bottom-current control on sedimentation in the western Bellingshausen Sea, West Antarctica

2006 ◽  
Vol 26 (2) ◽  
pp. 90-101 ◽  
Author(s):  
Carsten Scheuer ◽  
Karsten Gohl ◽  
Gleb Udintsev
Keyword(s):  
Current Control ◽  
Bottom Current ◽  
West Antarctica ◽  
Bellingshausen Sea

scholarly journals Albedo of the ice covered Weddell and Bellingshausen Seas

2012 ◽  
Vol 6 (2) ◽  
pp. 479-491 ◽  
Author(s):  
A. I. Weiss ◽  
J. C. King ◽  
T. A. Lachlan-Cope ◽  
R. S. Ladkin
Keyword(s):  
Sea Ice ◽  
Surface Albedo ◽  
Austral Summer ◽  
Open Water ◽  
Weddell Sea ◽  
First Year ◽  
Pack Ice ◽  
Bellingshausen Sea ◽  
The Mean ◽  
The Antarctic

Abstract. This study investigates the surface albedo of the sea ice areas adjacent to the Antarctic Peninsula during the austral summer. Aircraft measurements of the surface albedo, which were conducted in the sea ice areas of the Weddell and Bellingshausen Seas show significant differences between these two regions. The averaged surface albedo varied between 0.13 and 0.81. The ice cover of the Bellingshausen Sea consisted mainly of first year ice and the sea surface showed an averaged sea ice albedo of αi = 0.64 ± 0.2 (± standard deviation). The mean sea ice albedo of the pack ice area in the western Weddell Sea was αi = 0.75 ± 0.05. In the southern Weddell Sea, where new, young sea ice prevailed, a mean albedo value of αi = 0.38 ± 0.08 was observed. Relatively warm open water and thin, newly formed ice had the lowest albedo values, whereas relatively cold and snow covered pack ice had the highest albedo values. All sea ice areas consisted of a mixture of a large range of different sea ice types. An investigation of commonly used parameterizations of albedo as a function of surface temperature in the Weddell and Bellingshausen Sea ice areas showed that the albedo parameterizations do not work well for areas with new, young ice.

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